The percentage of infants born at very low birth weight (<1,500 grams) in U.S. cities with populations over 100,000 stayed consistent from 1989-2000, starting at about 1.6%, dropping briefly in 1996 to about 1.4%, and ending up at 1.6% in 2000. The total U.S. rate began at about 1.2% and has made a very gradual increase to 1.4%.
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